/Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/Selection/GeometrySelector.h
Combine FromSelection with the current Selection owned/referenced by the Selector, using the provided SelectionEditor and UpdateConfig. This can be used to explicitly initialize the Selection, restore it to a previous state for undo/redo, etc.
void UpdateSelectionFromSelection ( const [FGeometrySelection](API\Plugins\ModelingComponents\Selection\IGeometrySelector\FGeometrySelection) & FromSelection, bool bAllowConversion, [FGeometrySelectionEditor](API\Plugins\ModelingComponents\Selection\IGeometrySelector\FGeometrySelecti-) & SelectionEditor, const [FGeometrySelectionUpdateConfig](API\Plugins\ModelingComponents\Selection\IGeometrySelector\FGeometrySelecti-_3) & UpdateConfig, [UE::Geometry::FGeometrySelectionDelta](API\Plugins\DynamicMesh\Selections\FGeometrySelectionDelta) * SelectionDelta )